Pregled bibliografske jedinice broj: 87237
Determination of metals in river water by graphite furnace and flame atomic absorption spectrometry
Determination of metals in river water by graphite furnace and flame atomic absorption spectrometry // XVII. Hrvatski skup kemičara i kemijskih inženjera : sažeci = Abstracts / Vicković, Ivan (ur.).
Zagreb: Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI) ; Hrvatsko kemijsko drustvo, 2001. str. 172-172 (poster, nije recenziran, sažetak, znanstveni)
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Naslov
Determination of metals in river water by graphite furnace and flame atomic absorption spectrometry
Autori
Rončević, Sanda ; Bujan, Marija ; Nowka, René
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
XVII. Hrvatski skup kemičara i kemijskih inženjera : sažeci = Abstracts
/ Vicković, Ivan - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI) ; Hrvatsko kemijsko drustvo, 2001, 172-172
ISBN
953-6894-05-X
Skup
Hrvatski skup kemičara i kemijskih inženjera (17 ; 2001)
Mjesto i datum
Osijek, Hrvatska, 10.06.2001. - 13.06.2001
Vrsta sudjelovanja
Poster
Vrsta recenzije
Nije recenziran
Ključne riječi
GFAAS; FAAS; trace metal determination; water
Sažetak
Atomic absorption spectrometry is generally accepted as a standard method in determining the presence of metals in variety of samples in low-concentration range. Standardization procedures describing water analysis deal mostly with flame atomic absorption spectrometry. The reasons lay in detection limits, which are one order of magnitude lower as compared with maximum allowed concentrations of metals. This technique is also widely applied in other analytical laboratories. Performances of flame and graphite furnace atomic absorption spectrometry in water analysis were examined in this work. Samples from the delta of Neretva River were analysed regarding to metals of geochemical importance (Fe, Mn), and those of anthropogenic origin (Zn, Cu, Pb, Cd, Ni). Analytical procedure for preconcentration of metals included evaporation of water samples by infrared lamps, followed by dissolution of dry residue in nitric acid. The metal content in prepared samples was determined by the flame atomic absorption technique. Graphite furnace atomic absorption technique was applied in determining of metal content from previously filtrated water samples that were acidified with HCl. The results obtained by both techniques show different values. Significant disturbance was examined after preconcentration procedure was applied, which indicates additional contaminations. Lower concentrations of elements were found with graphite furnace technique, which shows excellent detection limits. This fact exceeds the necessity for previous treatment of samples.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
